rickets is a nutritional disorder that can develop if you do not get enough vitamin d calcium or phosphate rickets leads to poor functioning of a bone s growth plate growing edge softened and weakened bones stunted growth and in severe cases skeletal deformities
Hence, a 20-year period of the patent usually gives manufacturers a chance to recoup the cost of developing a new drug. When a drug patent expires, any pharmaceutical company can manufacture and sell the drug. A drug, which is produced and distributed without patent protection is called a generic drug.
Patents with 1380+ answers. Most utility patents expire 20 years after the earliest filing date, assuming the owner pays maintenance fees. Design patent expire in 14 years after they are issued. Depending on how slow is the US patent office, some US patents may get term extensions; however, no matter what, all patents do eventually expire. For more details, read: 2701-.